True, a variety of Chinese factories made Epis of inconsistent quality, especially LP's & G400's (SG's), and Korean Epi LP's, particularly by Unsung and Peerless, were generally superior products while those so-so Chinese jobbed guitars were being made, before Gibson opened their own factory and assumed better QC and consistent spec production. They still jobbed occasional runs of LP's out, though, for a while, particularly PlusTops, to Unsung Korea. They still do, or did as late as early 2008, job some acoustics to Samick Indonesia.
I'm only guessing, but that Korean LP you looked at is likely to be New Old Stock, hanging around that GC for at least a year or more, especially since that's an 'old' price, about $100 less than new Gibson China LP PT's.
I couldn't intelligently compare an Epi to an Agile, since I've never seen an Agile 'in person', and I never buy guitars unless I put my hands on them first, but I've played Samick Avions (Greg Bennetts) and they're essentially an Epi LP with a Samick headstock.
^^
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